Class: DigestHash

Inherits:
Object
  • Object
show all
Defined in:
lib/digest_hash.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(params) ⇒ DigestHash

Returns a new instance of DigestHash.



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# File 'lib/digest_hash.rb', line 9

def initialize(params)
  @params = params
end

Class Method Details

.call(params) ⇒ Object 



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# File 'lib/digest_hash.rb', line 5

def self.call(params)
  new(params).cache_key
end

Instance Method Details

#cache_key ⇒ Object 



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# File 'lib/digest_hash.rb', line 13

def cache_key
  Digest::MD5.hexdigest(cleaned_params)
end

#cleaned_params ⇒ Object 



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# File 'lib/digest_hash.rb', line 17

def cleaned_params
  @cleaned_params = @params

  remove_nulls
  deeply_sort_and_stringify_values
  stringify_keys
  sort_and_stringify_hash
end

#deeply_sort_and_stringify_values ⇒ Object 



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# File 'lib/digest_hash.rb', line 32

def deeply_sort_and_stringify_values
  @cleaned_params = @cleaned_params.deep_merge(@cleaned_params) do |_, _, val|
    if val.is_a? Array
      val.sort.to_s
    else
      val.to_s
    end
  end
end

#remove_nulls ⇒ Object 



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# File 'lib/digest_hash.rb', line 26

def remove_nulls
  @cleaned_params = @cleaned_params.to_h.delete_if do |_, val|
    val.nil? || val.try(:empty?)
  end
end

#sort_and_stringify_hash ⇒ Object 



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# File 'lib/digest_hash.rb', line 46

def sort_and_stringify_hash
  @cleaned_params = @cleaned_params.sort.to_s
end

#stringify_keys ⇒ Object 



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# File 'lib/digest_hash.rb', line 42

def stringify_keys
  @cleaned_params = @cleaned_params.deep_stringify_keys
end